Spark-arrester.



D. H. COX.

SPARK ARRESTER.

APPLICATION FILED DEc.29.1917.

LQSLMQ, memed oet. 8, 1918.

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:BILLARD ii. COX, or yBLACK ROCK, OREGON.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented Oct. 8, 19118.

Application filed December 29, 1917. Serial No. 209,446.

To all whom t may concern:

Be it known that DILLARD H. COX, a citizen of the United States of America, residing at Black Rock, in the county lof Polk and State of Oregon, have invented new and useful Improvements in Spark-lArresters, of which the following is a specication.

The present invention comprehends generally improvements in stoves and furnaces and more particularly relates to a spark arrester. A u

As the primary aim and object of the present invention contemplates the provision of a device of the above character designed especially for application on a stack of a locomotive for arresting the sparks which emit from the stack and yfor delivering the cinders upon the sides of the boiler of the locomotive thereby reducing to a minimum the occurrence of accidental fires, etc.

It is an equally important object ofthis invention to provide a spark `arrester of the above mentioned character wherein the construction is of novel form and embodies a cage into which smoke, sparks, cinders, etc., are delivered and prevented from flying through the atmosphere.

More particularly the present invention includes the provision of a device ,of the above character whereinY improved deiiecting means is employed for directing the cinders which fall to the bottom of the cage toward the outlet pipes which conduct the said einders and deposit them upon the boiler of the locomotive.

As a further improvement the present in# vention includes the provision of improved means for attaching the device to the smoke stack of a locomotive, the parts being adjustable so that they may be arranged in proper relation with `respect to each other.

Among the other aims and objects of the invention may be recited the provision of a device of the character described with a view to compactness, and in which the number of parts are few, the construction simple, thecost of production low and the efficiency high.

Other improvements and novel details in the construction and arrangement of the various parts of theY apparatus will be brought out more in n detail in the description to follow, which for a clear understanding of the invention should be considered in connection with the accompanying drawings forming a part hereof, and wherein is disclosed for the purpose of illustration arconvenient and `satisfactory embodiment of the invention. It is to be noted in this connec tion that minor changes in the construction and arrangement of parts may be made without departing from the principle of operation of the various parts.v

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a vertical section of the invention;

Fig. 2 is a vertical sectional view taken on `line 2 2 of Fig. 1; u

Fig. 3 is a top plan view of the invention;

Fig. et isa transverse section taken on line aft, Fig. 1.

Similar characters of reference are employed in all thev above described views, to indicate corresponding parts. I

Referring now, more particularly, to the accompanying drawings, there is provided a. perforated receiving or` retaining cage 1 formed desirably of screening the upper and lower edges of which are secured to annular link bands Q and 3. Disposed in the lower end of the cage is a frusto-conical guide 4 formed of metal while attached to the outer surface of the guide adjacent the lower edge thereof are uniformly spaced laterally eX- tending brackets or ears 5. An inverted conical baffle 6 is now mounted in the open upper end of the cage and has itslower portion 7 adjacent the apex formed of metal while its upper enlarged portion is formed of screening. The screening portion 8 is suitably reinforced by braces 9 the outer ends of which are connected by a band 10. Brackets 11 are secured to the outer surface adjacent the enlarged end` of the conical baffle 6 and extend laterally therefrom being of a construction substantially similar to the brackets 5. Elongated rods 12 are now employed and are inserted through the opposed brackets 5 and 11 and have their respective terminals threaded and engaged by nuts 13 and 14. The nuts 13 and 14 on the upper ends of the rods 12 serve to clamp the brackets 1l and the band 2 together subsequent to passing the bolt therethrough while the nuts '13 and 14 on the lower ends of the rods serve to clamp the lower band and the brackets 5 together.

In attaching the device to a smoke stack 15 a suitable stand indicated in its entirety by the numeral 16 is employed and consists of depending legs 17 the upper ends of which are secured by suitable fastening devices 18 to the inner surface of the frustoconical guide adjacent the lower end thereof as indicated while an annular clamping band 19 is carried bythe lower ends of the legs. This band is disposed about a guiding sleeve 2Ov the lower portion of which is slit longitudinally as at 21 While the upper end is flared inwardly as at 22. The sleeve is also disposed about the upper end of the stackV 15 and subsequent to arranging the upper end 22 of the sleeve in close relation with the lower end of the guide 4 the annular band is tightened about the sleeve to consequently clamp the sleeve on the stack as indicated. This tightening ofthe sleeve is preferably effected through the instrumentality of a bolt 23 which is' passed through the ears 24 formed at the terminals of the band while the said bolt is adj ustably engaged by a wing nut 25. By this arrangement as the smoke, cinders, sparks, etc., emit from the stack the sleeve 20 directs the same into the conical guide 4 which in turn directs them against the baffle. The baffle serves to throw the sparks', and cinders against the inner surface of the cage and owing tothe fact that the latter is reticulated smoke will be allowed t0 pass through while the cinders and sparks will be prevented from passing into the atmosphere and will fall through the bottom of the cage.

As intimated, suitable means have been employed for directing the cinders, etc., eX- teriorly of the cage. In reducing this feature of the invention to practice a deflecting plate'26 which is substantially V-shaped in cross section is formed with an opening and is straddled about the guide 4 so that the outer edges of the plate 26 rest upon the lower band 3 and owing to the fact that the portions of the plate are inclined in o po site directions cinders will be directe toward opposite sides of the cage. Suitable outlet pipes 27 are mounted-in the cage, suitably and rigidly connected to the adjacent lower ends of the inclined portions of the plate 26 as indicated in the drawings. By the provisionV of this deflecting plate 26 when the cinders fall toward the bottom of the cage the latter serves to deiect the cinders through the inclined outlet pipes 27 which in turn deposit the cinders on the upper surface of the boiler, not shown, of the locomotive.

4It is believed that in view of the foregoing description, a further detailed description of the operation of the invention is entirely unnecessary. Likewise it is believed that the advantages of the invention will be readily apparent.

l As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made Without departing from the scope thereof and it is intended that all matter contained in the above description or `shown in the accompanying drawings shall be interpreted as illustrative and not in a limited sense. It is also to be understood that the language used inthe following claims is intended to cover all the generic and specicfeatures of the invention herein described and all statements .of the scopeof the invention which as a matter of language mightr be said to fall therebetween.

Having thus described the invention what is claimed as new and kdesired to be secured by Letters Patent is 1. A spark arrester of the character describedy including a reticulated cage, a frustoconical guide mounted in the lower 'end the-reof, an inverted conical baffle Vmounted in the upper end of the cage and having its apex disposed partially within the restricted end of the guide, means for attaching the guide to a smoke stack, a deflecting pipe mounted in the bottom of the cage, and outlet pipes mounted in the lower end of the cage. Y

2. A device of the character described including a reticulated cage, a frustoconical guide mounted in the lower end of the cage, an inverted conical baffle mounted in the upper end of the cage and having its apex disposed slightly within the restricted open end of the guide, supporting legs .depending from the guide, an annular clamping band carried by the lower ends of the legs, an attaching and guiding sleeve slidably disposed in theclamping band and adapted for telescoping asmoke stack, means for adjusting the band and clamping the sleeve in position, and means for deflecting cinders eX- teriorly of the cage. l3. A device of thecharacter described including a cage embodying a cylindrical reticulated body and annular bands to which the upper and lower edges of the body are secured, a frustoconical metallic guide disposed in the lower end of the body, an inverted conical baflie disposed in the upper end of the body of the cage', brackets projecting from they lguide and the baflie, elongated supporting rods passing through the opposed brackets andbands, means adjust ilo ably engageable on the rods for clamping tive ends of the deiecting plate and prothe adjustable bands and brackets together jecting exteriorly of the cage, and means for to consequently maintain the body of the attaching the cage above the smoke stack of l0 cage rigid, a deflecting plate mounted in the a locomotive.

5 bottom of the cage of V-shaped ccngura- In testimony whereof I afix my signature.

tion in cross section and straddled about the guide, outlet pipes connected to the respec- BILLARD H. COX.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of latents,k Washington, D. C. 

